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Interface Engineered Binary Platinum Free Alloy-based Counter Electrodes with Improved Performance in Dye-Sensitized Solar Cells.

ABSTRACT: The high cost and platinum dissolution issues of counter electrodes (CEs) are two core problems for the development of dye-sensitized solar cells (DSSCs). In this work, different CEs based on binary alloy Ru81.09Co18.91, Ru80.55Se19.45 and Co20.85Se79.15 nanostructures for DSSCs were successfully synthesized and investigated by a facile and environmentally friendly approach. Here, we found that the Co20.85Se79.15 alloy CE-based device yields the higher photoelectric conversion efficiency of 7.08% compared with that (5.80%) of the DSSC using a pure Pt CE because of the larger number of active sites with improved charge transferability and reduced interface resistance by matching work function with the I3?/I? redox electrolyte. The inexpensive synthesis method, cost-effectiveness and superior catalytic activity of the Co20.85Se79.15 alloy may open up a new avenue for the development of CEs for DSSCs in the near future.

SUBMITTER: Liu WW 

PROVIDER: S-EPMC7280534 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Interface Engineered Binary Platinum Free Alloy-based Counter Electrodes with Improved Performance in Dye-Sensitized Solar Cells.

Liu Wen-Wu WW   Jiang Wei W   Liu Yu-Cheng YC   Niu Wen-Jun WJ   Liu Mao-Cheng MC   Kong Ling-Bin LB   Lee Ling L   Wang Zhiming M ZM   Chueh Yu-Lun YL  

Scientific reports 20200608 1

The high cost and platinum dissolution issues of counter electrodes (CEs) are two core problems for the development of dye-sensitized solar cells (DSSCs). In this work, different CEs based on binary alloy Ru<sub>81.09</sub>Co<sub>18.91</sub>, Ru<sub>80.55</sub>Se<sub>19.45</sub> and Co<sub>20.85</sub>Se<sub>79.15</sub> nanostructures for DSSCs were successfully synthesized and investigated by a facile and environmentally friendly approach. Here, we found that the Co<sub>20.85</sub>Se<sub>79.15</  ...[more]

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